taliban militants have carried out a major attack in southern afghanistan, killing more than 20 people, including a bbc reporter. the assault targeted the officers of the deputy governor, police headquarters and a private security firm. a u.s. soldier has been arrested near the fort hood military base in texas after being found with bomb-making materials. the serviceman has admitted planning an attack. in china, the government is facing a public backlash over the way it handled a high speed train crash which killed 39. authorities say the crash was called by design flaws and signaling equipment but allegations of corruption and lack of transparency are fueling public anger. the premier has visited the crash site. the bbc's martin patience reports from the scene. >> wen jiabo is the soft paternal face of the communist party. in times like this he's called upon to soothe the nation's nerves. at the crash site he paid his respects but he was also bowing to public pressure. >> no matter if it's a mechanical fault, a management problem, or indeed a manufacturing issue, we will get to the bo